Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Spray Behavior and Atomization Characteristics of Dual Stream Gasoline Injectors

2중 분류 가솔린 연료분사기들의 분무거동 및 미립화 특성

  • Song, Bhum-Keun (Graduate School of Precusion Mechanical Engineering, Chonbuk University) ;
  • Kim, Won-Tae (Jeonju Machinery Research Center) ;
  • Kang, Shin-Jae (Division of Mechanical & Aerospace System Engineering, Chombuk University)
  • 송범근 (전북대학교 대학원) ;
  • 김원태 (전주기계산업리서치센터) ;
  • 강신재 (전북대학교 기계항공시스템공학부)
  • Published : 2005.09.01
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Abstract

The injector, which is used in a 4-valve gasoline engine, is required to be maintained the dual stream because of the design of dual intake port. In addition, the spray characteristics of fuel injector have strong influence on engine performance, exhaust emission, fuel consumption, and especially the cold start condition for the port injection. So, commercial gasoline injectors off different type were inspected. Those are 2 hole,4 hole, air shroud 4 hole, and air shroud 4 hole injector with separator. The spray behavior of dual stream was researched by the visualization system and PDPA system was employed to measure the droplet size. Atomization is one of the most important characteristic, so droplet size distributions and SMD are investigated. And the spray characteristics of each injector are also analyzed such as the spray tip penetration, spray angle, and separation angle.

Keywords

References

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